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Active & Passive Voice

SSC CPO · English Language

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Also prepare for:CGL CHSL MTS GD

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Core Concept

Read this first — the foundation of the topic

→CORE CONCEPT

Active Voice: The subject performs the action

✏️Example

'Ram writes a letter.' Passive Voice: The action is performed on the subject

✏️Example

'A letter is written by Ram.' The key difference is WHO is doing the action versus WHO is receiving the action

💡KEY TRANSFORMATION RULES

Object of active voice becomes subject of passive voice 2. Subject of active voice becomes object with 'by' in passive voice 3. Verb changes to 'be + past participle' form 4. Tense remains the same in both voices

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Formula Block

Memorise — at least one formula appears in every paper

Active to Passive Transformation:

Subject + Verb + Object → Object + be/is/am/are/was/were + Past Participle + by + Subject

Tense-wise Formula:

Present Simple: do/does → is/am/are + Past Participle

Past Simple: did → was/were + Past Participle

Present Perfect: has/have + Past Participle → has/have been + Past Participle

Future Simple: will + base verb → will be + Past Participle

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Exam Patterns

What examiners ask — read before attempting PYQs

📋Common patterns include

- Direct conversion (Active to Passive or vice versa) - Identifying correct passive form from options - Error detection in voice usage - Fill in the blanks with correct voice form SHORTCUT TRICK #1 - THE 'BY' TEST: If you can add 'by someone' at the end of the sentence meaningfully, it's likely passive voice. If it sounds odd, it's active voice. SHORTCUT TRICK #2 - TENSE PRESERVATION: The tense never changes during voice conversion. If active is present tense, passive will also be present tense. Only the verb form changes

✏️WORKED EXAMPLE 1

1

Identify Subject (teacher), Verb (explains), Object (lesson)

2

Make object the new subject → 'The lesson'

3

Convert verb to passive form → 'is explained' (present simple)

4

Add 'by' + original subject → 'by the teacher' Passive: 'The lesson is explained by the teacher.' WORKED EXAMPLE 2: Passive: 'The book was written by Shakespeare.'

1

Identify passive structure (was written = past simple passive)

2

Make 'by' phrase the new subject → 'Shakespeare'

3

Convert to active verb → 'wrote' (past simple)

4

Make original subject the object → 'the book' Active: 'Shakespeare wrote the book.' SHORTCUT TRICK #3 - MODAL VERB FORMULA: With modals (can, may, must, should): Active: Subject + Modal + Base Verb + Object Passive: Object + Modal + be + Past Participle + by + Subject Example: 'You must complete the work' → 'The work must be completed by you' THE #1 MOST COMMON TRAP: Students often change the tense while converting voice

💡Remember

TENSE STAYS THE SAME, only verb form changes. If the active sentence is in past tense, the passive will also be in past tense. Don't convert 'He wrote a letter' to 'A letter is written by him.' The correct answer is 'A letter was written by him.' Another major mistake is forgetting that some verbs cannot be made passive. Intransitive verbs (verbs without objects) like 'sleep', 'die', 'arrive' cannot be converted to passive voice

💡EXAM TIP

In SSC CGL, always read the entire sentence carefully. Look for time indicators (yesterday, tomorrow, always) to confirm the tense. This prevents the common error of wrong tense usage in voice conversion.

🔑 Key Points

Active voice: subject performs action; Passive voice: action performed on subject
Formula: Subject + Verb + Object → Object + be + Past Participle + by + Subject
Tense never changes during voice conversion, only verb form changes
Shortcut: Use 'by someone' test to identify passive voice sentences
Modal formula: Modal + be + Past Participle for passive voice
Intransitive verbs (sleep, die, arrive) cannot be made passive
Object of active voice becomes subject of passive voice
Present simple: do/does → is/am/are + Past Participle
Past simple: did → was/were + Past Participle
Future simple: will + base verb → will be + Past Participle

📌 Exam Facts

Voice questions appear 2-3 times in every SSC CGL English paper
Intransitive verbs like sleep, die, arrive, happen cannot be converted to passive voice
Modal passive formula: Modal + be + Past Participle (can write → can be written)
Present perfect passive uses 'has/have been + Past Participle' structure
Interrogative passive starts with auxiliary verb: 'Is the work done by him?'
Imperative active voice converts to 'Let + object + be + past participle'
Future perfect passive uses 'will have been + past participle' structure
Continuous passive uses 'being' with past participle: 'is being written'

🚀 60-Second Revision

Remember: Tense stays same, only verb form changes in voice conversion
Formula: Active Object becomes Passive Subject, add 'by' before active subject
Trap: Don't change tense while converting - most common error in exams
Shortcut: Add 'by someone' to test if sentence can be passive
Quick check: Modal + be + Past Participle for modal passive sentences
Alert: Intransitive verbs cannot be made passive
Exam tip: Look for time indicators to identify correct tense before conversion

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